US3248798A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process and apparatus for continuous drying of continuous web materials
Assignee: FPInnovations
•
Filing: 1962-08-03
•
Granted: 1966-05-03
•
Expires: 1982-08-03
Abstract
No abstract record available.
Inventors
- 👤 Bernard W Burgess
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:17
CPC Classifications
D; D21; D21F; D21F5/00; D21F5/004; D21F5/005; Y; Y10; Y10S; Y10S264/00; Y10S264/51
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
59 words
A CONTINUOUS PROCESS FOR DRYING A CONTINUOUS WEB, SAID PROCESS COMPRISING: CONTINUOUSLY FEEDING SAID WEB THROUGH A PORTION OF A HEATED FLUIDIZED BED SUPPORTING SAID WEB WHILE IT PASSES THROUGH SAID BED AND CONTINUOUSLY SUBJECTING ONE SIDE OF SAID WEB TO SUB-ATOMSPHERIC PRESSURES DURING AT LEAST A PORTION OF THE TIME DURING WHICH IT IS SUBMERGED IN THE BED.
Claim 2
Dependent Claim
59 words
A CONTINUOUS PROCESS FOR DRYING A CONTINUOUS WEB, SAID PROCESS COMPRISING: CONTINUOUSLY FEEDING SAID WEB THROUGH A PORTION OF A HEATED FLUIDIZED BED SUPPORTING SAID WEB WHILE IT PASSES THROUGH SAID BED AND CONTINUOUSLY SUBJECTING ONE SIDE OF SAID WEB TO SUB-ATOMSPHERIC PRESSURES DURING AT LEAST A PORTION OF THE TIME DURING WHICH IT IS SUBMERGED IN THE BED.
References Cited (Backward Citations)
GB338547A
Cited
US2785478A
Cited
US2879607A
Cited
GB817992A
Cited
US2938276A
Cited
US2896336A
Cited
US2981631A
Cited
GB885226A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-05-02 | 1969-11-01 | 1970-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-02 | 1973-11-01 | 1974-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-02 | 1977-11-01 | 1978-05-03 | $7700.00 | Window Closed / Lapsed |